Influence of humidity on electrochemical CO2 sensors based on sol-gel processed NASICON with new compositions

Elisabetta Di Bartolomeo, Enrico Traversa, Laura Montanaro, Hiromichi Aono, Yoshihiko Sadaoka

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


Sol-gel processed NASICON-type with new compositions in the Na3Zr2-(x/4)Si2-xP1+xO12 system showed an improved sinterability with an increase in the x value. This is attributed to liquid phase sintering. This dense electrolyte system is suitable for the application as gas sensors. The CO2 gas sensors using highly dense x = 0.667 (sample B) and x = 1.333 (sample C) samples show a stable EMF response in dry atmosphere which is very close to the theoretical value. Although a lower sensitivity and slower response were obtained in humid CO2 gas, the sensor performance recovered after switching from humid gas to dry gas.

Original languageEnglish (US)
Pages (from-to)181-185
Number of pages5
JournalJournal of Sol-Gel Science and Technology
Issue number1-3
StatePublished - Dec 1 2000
Event10th International Workshop pn Glass and Ceramics, Hybrids and Nanocomposites from Gels - Yokohama, Jpn
Duration: Sep 20 1999Sep 24 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Biomaterials
  • Condensed Matter Physics
  • Materials Chemistry


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